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#11
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Just for fun, put the AM radio near the Altair and tune it to an unused frequency. Reading a disk and running a program can make some really neat robot sounds!
![]() Did you see the thread about the 3.5" disk drive, CP/M, and tarbell controller? Wouldn't be compatible with MITS software... The Altair32 emulator comes with a CP/M image. I wrote a basic program to transfer a disk RAW from the Altair to my Windows machine. I never got around to Windows -> Altair... So have you gotten bored of watching the lights flicker when using the disk drive and running programs? ![]() Why should getting DOS to run be harder than Basic? Why can't you get this far with the 8800B? |
#12
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This time around, I wrote a perl script to generate altair paper tape images of any binary so that I could load things easily via the serial port and then worked my way up from simple, small programs until I established that the disk hardware was healthy. In the end, the original problem with booting turned out to be that only a few of my floppys are readable. The ones I was trying to boot from before were simply bad. I'll have to write something to try to read raw sectors from them and see if there's anything I can salvage before they turn to dust. |
#13
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I did the same thing, kind of... I wrote a 10-15 byte program that loads a predetermined amount of bytes from the serial port and then does a jmp 0000. I had the 2SIO jumpered for 19200 and could boot basic 5.0 in about 3 seconds.
![]() It was a good beginning project for 8080 assembly! |
#14
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I have a friend that wrote a program to transfer programs either direction from a windows based machine. We used it to transfer Paper Tapes from a High Speed Paper Tape Reader to a Nova 1200 and then to a window based machine. He didn't want the program to ADD or Subtract anything from the programs, such as Hyperterminal will do, control characters and such.
I am sure that it would be able to do the same for the Altair. I CANNOT put the code on the WEB, nor give permission to use it. But you can contact Him yourself !! ![]() ![]() ![]() He is -- Bruce Ray of WildHareComputers.com Anyway I think it is dot Com .... Could be dot org .... Its been awhile since I looked up his WEB site. If nothing else just look up Wild Hare Computers on Google or such. Thanks Marty |
#15
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Any chance you could make duplicate tapes for the members here or post an exact binary image of the 8K BASIC tape?
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#16
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#17
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#18
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Heh. No, I'm in Minnesota. And I don't hold a grudge, anyway
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#19
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![]() but I don't think it was the same one you were bidding on. Mine came from an estate. It had a few issues but I've mostly restored it. Tape reader and punch are working OK, although I don't yet have it on 20mA loop. Building an RS232 converter for that and then I'll be able to hook it to a number of systems here. Amazing piece of machinery. Chris |
#20
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Hi Geof;
Do You know where disk basic is started from -- is it from 00000 or 0100h like CPM or somewhere else, I don't have an Altair Disk Drive, But I have it on Paper Tape, and would like to try and see if I can get it to run from the tape. I made the Tapes with an (RS-232) serial Paper Tape Punch, but don't Know where to start it from. And if it is Loaded straight through like an image file or with a Special Loader like the other Basics or some other loader. I do have a Tarbell Disk Controller, but I am not sure if it works or not. THANK YOU Marty |
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